Scanning the Shipping Gallery John Hindmarch , Scanlab and the Science Museum firstname.lastname@example.org
The Shipping Gallery• The largest gallery in the Science Museum• Largely unchanged since the 1950s• Decommissioned in May 2012 to make way for a new exhibition opening in 2014Pictures courtesy Dave Patten, http://www.flickr.com/photos/davepatten
The Project• The Science Museum wished to record and preserve the exhibition• Normal method would involve photography and potentially video, however…• Inspired by the work of Scanlab, the museum approached us about scanning the entire space scanlabprojects.co.uk
Scanning• We used a pair of Faro Photon terrestrial laser scanners• A rotating mirror sends out a laser beam, and sensors record up to 1,000,000 ‘reflections’ per second• Measures time it takes for reflected pulse to return to the scanner• Builds up a ‘point cloud’ – a 3D model of the environment• But – no colour, and lots of ‘shadows’
Colour?• To capture colour, a digital camera is attached to top of scanner• The camera takes a series of ‘panoramic’ photos• The images are projected on to the point cloud, giving each point a colour value
Processing• 275 individual scans, captured over five nights, each containing millions of points• 2 billion points overall• = 256Gb of data!• 16 weeks processing time: – aligning the scans – cleaning noisy data – colour correction• 7 minute video uses ~ 10% of the data and took 48 hours to render
Uses?– Video, with commentary recorded by the exhibition’s curator, to be placed online– Alongside more detailed 3D models that visitors can interact with– Detailed record of gallery space could be used for future exhibition planning– Dataset can be used in different ways as technology improves. A fully interactive (walk through) model?
Why?“We hope that archiving exhibitions digitally in thisway will prolong their legacy beyond their physical installation. As a digital record of the space and exhibits this model offers the potential for online versions to be created and interacted with by a much vaster public audience.” The Science Museum